# !/usr/bin/env python
# -*- coding: UTF-8 -*-
# author: xiazhiquan
# date: Jul 23, 2011
# 
# Copyright 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import cgi
import os
from google.appengine.api import users
from google.appengine.ext import db, webapp
from google.appengine.ext.webapp import template, util
from roger.util.timeutil import timeutil

timeutil = timeutil()

class Greeting(db.Model):
    author = db.UserProperty
    content = db.StringProperty(multiline=True)
    date = db.DateTimeProperty(auto_now_add=True)


class MainPage(webapp.RequestHandler):
    def get(self):
        date = timeutil.getCNNowFormat("%Y-%m-%d %H:%M:%S")
        greetings_query = Greeting.all().order('-date')
        greetings = greetings_query.fetch(10)

        if users.get_current_user():
            url = users.create_logout_url(self.request.uri)
            url_linktext = 'Logout'
        else:
            url = users.create_login_url(self.request.uri)
            url_linktext = 'Login'

        template_values = {
            'greetings': greetings,
            'url': url,
            'url_linktext': url_linktext,
            'date': date,
            }

        path = os.path.join(os.path.dirname(__file__), 'index.html')
        self.response.out.write(template.render(path, template_values))


class GuestBook(webapp.RequestHandler):
    def post(self):
        greeting = Greeting()

        if users.get_current_user():
            greeting.author = users.get_current_user()

        greeting.content = cgi.escape(self.request.get('content'))
        greeting.put()
        self.redirect('/')


def main():
    application = webapp.WSGIApplication([('/', MainPage), ('/sign', GuestBook)],
                                                                                debug=True)
    util.run_wsgi_app(application)


if __name__ == '__main__':
    main()
